Upto what distance does the Earth exerts its gravitational pull ?

Answer 1

Great question!

In theory an object's Gravitational influence is infinite in extent. But this is based on an idealized situation where there are no other bodies.

In reality, when there are other objects in the system, objects have what is called a "sphere of influence." Consider the Earth-Moon system. Imagine you're traveling along a straight line connecting the centers of mass of the Earth and Moon. Moving along that line toward the moon, you'll reach a point when the Moon's Gravity is 10-times stronger than the Earth's gravity. This defines the Moon's "sphere of influence." That is, within a sphere defined by this radius, the Moon's Gravity dominates and other object's Gravity, if 1/10th the moons, only represent a "perturbation" to your motion.

Answer 2

Technically to infinity, but the forces diminishes with the square of the distance, so if you move twice as far away, you experience only 1/4 the force. Therefore the force diminishes rather quickly.

The force also depends on the mass of the object being acted on. The Earth's gravitational pull has more effect on a large object than a small one at the same distance.

Answer 3

In the equation
F=-GmM/R^2
there is no limit on R.
As R approaches, but never reaches infinity, F approaches, but never reaches 0
By the time you reach the orbit of the Moon, however, the gravitational force exerted by the Earth is only.0275% of the force exerted at Earth's surface, and can be ignored unless you are into super precision.

Answer 4

for ever, but it falls off as 1/(distance)^2

Answer 5

930,000 miles that is where the sun cancels out the earths gravitational pull.

Answer 6

Infinite.

It matters how tiny a gravity can be measured - that's how far you will find it.

;-)

Answer 7

Technically for all of infinity

Answer 8

36000 km